Slater Lewis insulator patent (not screw-top style)

[Trade Journal]

Publication: The Telegraphic Journal and Electrical Review

London, Englandp. 466-467, col. 2-1

SLATER LEWIS'S PATENT INSULATOR.

THIS insulator (according to the inventor) may now be regarded as a practical success, having withstood the most severe tests over a period of about four years. It will be seen from the illustration that the usual iron stud is screwed into the insulator instead of being secured by cement.

This idea, however, is not exactly new, inasmuch as Mr. Cordeaux patented a similar article some seven or eight years ago, but with the addition of an